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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,3 @@ | ||
| import { ImageWorker } from '@warp-drive/experiments/image-worker'; | ||
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| new ImageWorker(); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,156 @@ | ||
| import { createDeferred } from '@ember-data/request'; | ||
| import type { Deferred } from '@ember-data/request/-private/types'; | ||
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| export type SuccessResponseEventData = { | ||
| type: 'success-response'; | ||
| thread: string; | ||
| url: string; | ||
| }; | ||
| export type ErrorResponseEventData = { | ||
| type: 'error-response'; | ||
| thread: string; | ||
| url: string; | ||
| }; | ||
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| export type RequestEventData = { | ||
| type: 'load'; | ||
| thread: string; | ||
| url: string; | ||
| }; | ||
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| export type ThreadInitEventData = { | ||
| type: 'connect'; | ||
| thread: string; | ||
| }; | ||
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| export type MainThreadEvent = MessageEvent< | ||
| SuccessResponseEventData | ErrorResponseEventData | ||
| >; | ||
| export type WorkerThreadEvent = | ||
| | MessageEvent<RequestEventData> | ||
| | MessageEvent<ThreadInitEventData>; | ||
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| import { assert } from '@ember/debug'; | ||
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| export interface FastBoot { | ||
| // eslint-disable-next-line no-unused-vars | ||
| require(_moduleName: string): unknown; | ||
| isFastBoot: boolean; | ||
| request: Request; | ||
| } | ||
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| const isServerEnv = typeof FastBoot !== 'undefined'; | ||
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| // This is a copy of WarpDrive's ImageFetch class with | ||
| // a temporary fix for an issue with which url is returned. | ||
| export class ImageFetch { | ||
| declare worker: Worker | SharedWorker; | ||
| declare threadId: string; | ||
| declare pending: Map<string, Deferred<string>>; | ||
| declare channel: MessageChannel; | ||
| declare cache: Map<string, string>; | ||
| declare queue: MainThreadEvent[]; | ||
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| constructor(worker: Worker | SharedWorker | null) { | ||
| this.threadId = isServerEnv ? '' : crypto.randomUUID(); | ||
| this.pending = new Map(); | ||
| this.cache = new Map(); | ||
| this.queue = []; | ||
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| const isTesting = false; | ||
| assert( | ||
| `Expected a SharedWorker instance`, | ||
| isTesting || isServerEnv || worker instanceof SharedWorker, | ||
| ); | ||
| this.worker = worker as SharedWorker; | ||
|
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| if (!isServerEnv) { | ||
| const fn = (event: MainThreadEvent) => { | ||
| this.queue.push(event); | ||
| if (this.queue.length === 1) { | ||
| setTimeout(() => { | ||
| this.processQueue(); | ||
| }, 0); | ||
| } | ||
| }; | ||
|
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||
| if (worker instanceof SharedWorker) { | ||
| worker.port.postMessage({ type: 'connect', thread: this.threadId }); | ||
| worker.port.onmessage = fn; | ||
| } else if (worker) { | ||
| this.channel = new MessageChannel(); | ||
| worker.postMessage({ type: 'connect', thread: this.threadId }, [ | ||
| this.channel.port2, | ||
| ]); | ||
|
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| this.channel.port1.onmessage = fn; | ||
| } | ||
| } | ||
| } | ||
|
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| processQueue() { | ||
| const queue = this.queue; | ||
| this.queue = []; | ||
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| queue.forEach((event) => { | ||
| const { type, url, objectUrl } = event.data; | ||
| const deferred = this.cleanupRequest(url); | ||
| if (!deferred) { | ||
| return; | ||
| } | ||
|
|
||
| if (type === 'success-response') { | ||
| deferred.resolve(objectUrl); | ||
| return; | ||
| } | ||
|
|
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| if (type === 'error-response') { | ||
| deferred.reject(null); | ||
| return; | ||
| } | ||
| }); | ||
| } | ||
|
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| cleanupRequest(url: string) { | ||
| const deferred = this.pending.get(url); | ||
| this.pending.delete(url); | ||
|
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| return deferred; | ||
| } | ||
|
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| _send(event: RequestEventData) { | ||
| this.worker instanceof SharedWorker | ||
| ? this.worker.port.postMessage(event) | ||
| : this.channel.port1.postMessage(event); | ||
| } | ||
|
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| load(url: string) { | ||
| if (isServerEnv) { | ||
| return Promise.resolve(url); | ||
| } | ||
|
|
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| const objectUrl = this.cache.get(url); | ||
| if (objectUrl) { | ||
| return Promise.resolve(objectUrl); | ||
| } | ||
|
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| const deferred = createDeferred<string>(); | ||
| this.pending.set(url, deferred); | ||
| this._send({ type: 'load', thread: this.threadId, url }); | ||
| return deferred.promise; | ||
| } | ||
| } | ||
|
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||
| export default { | ||
| create() { | ||
| return new ImageFetch( | ||
| new SharedWorker( | ||
| new URL('../data-worker/image-worker.ts', import.meta.url), | ||
| { | ||
| name: 'ImageWorker', | ||
| type: 'module', | ||
| }, | ||
| ), | ||
| ); | ||
| }, | ||
| }; |